<script setup>
import {ref,computed, reactive} from "vue";
import {EditPen, Lock, Message, User} from "@element-plus/icons-vue";
import router from "@/router";
// import {get, post} from "@/net"
import {ElMessage} from "element-plus";
/*数据以及规则*/
const codeTime = ref(0)
const formRef = ref()
const form = reactive({
  username:'',
  password:'',
  password_repeat:'',
  email:'',
  code:''
})
/*验证函数*/
//验证用户名
const validateUsername = (rule,value,callback) =>{
  if(value === ''){
    callback(new Error('请输入用户名'))
  }else if (!/^[a-zA-Z0-9\u4e00-\u9fa5]+$/.test(value)){
    callback(new Error('用户名不能包含特殊字符，只能是中英文+数字'))
  }else {
    callback()
  }
}
//验证重复密码
const validatePasswordRepeat = (rule,value,callback) =>{
  if(value === ''){
    callback(new Error('请再次输入密码'))
  }else if (value !== form.password){
    callback(new Error('两次输入的密码不一致'))
  }else {
    callback()
  }
}

const rule = {
  username:[
    { validator: validateUsername,trigger:['blur','change']},
    {min:1,max:20,message:'用户名的长度必须在1-20之间',trigger:['blur','change']}
  ],
  password:[
    {required:true,message:'请输入密码',trigger:'blur'},
    {min:6,max:20,message:'密码的长度必须在6-16之间',trigger:['blur','change']}
  ],
  password_repeat:[
    {validator: validatePasswordRepeat,trigger:['blur','change']}
  ],
  email:[
    {required:true,message:'请输入邮箱地址',trigger:'blur'},
    {type:'email',message:'请输入合法的邮箱地址',trigger:['blur','change']}
  ],
  code:[
    {required:true,message:'请输入验证码',trigger:'blur'},
  ]
}
/*请求函数*/
function askCode(){
  if (determineIfEmailIsCorrect){
    codeTime.value = 60
    get(`/api/auth/ask-code?email=${form.email}&type=register`,()=>{
      ElMessage.success(`验证码已发送到邮箱：${form.email}，请注意查收`)
      setInterval(()=> codeTime.value--,1000)
    },(message)=>{
      ElMessage.warning(message)
      codeTime.value = 0
    })
  }else {
    ElMessage.warning('请输入正确的邮箱格式')
  }
}
const determineIfEmailIsCorrect = computed(()=>/^[\w.-]+@[\w.-]+\.\w+$/.test(form.email))

function register(){
  formRef.value.validate((valid)=>{
    if (valid){
      post('/api/auth/register',{...form},()=>{
        ElMessage.success('注册成功，欢迎加入')
        router.push('/')
      })
    }else {
      ElMessage.warning('请完整填写注册表单内容')
    }
  })
}

</script>

<template>
  <div style="width: 100vw;height: 100vh;overflow: hidden;display: flex">
    <div style="flex: 1;background-color: black">
      <el-image style="width: 100%;height: 100%" fit="cover"
          src="https://www.toopic.cn/public/uploads/small/1642749399720164274939972.jpg"/>
    </div>
  <div style="text-align: center;margin: 0 20px">
    <div style="margin-top: 100px">
      <div style="font-size: 25px;font-weight: bold">注册新用户</div>
      <div style="margin-top: 5px;font-size: 14px;color: grey">欢迎注册该系统，请在下方填写相关信息</div>
    </div>
    <div style="margin-top: 50px">
      <el-form :model="form" :rules="rule" ref="formRef">
        <el-form-item prop="username">
          <el-input v-model="form.username" maxlength="20" type="text" placeholder="用户名">
            <template #prefix>
              <el-icon><User /></el-icon>
            </template>
          </el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input v-model="form.password" type="password" maxlength="20" placeholder="密码">
            <template #prefix>
              <el-icon><Lock /></el-icon>
            </template>
          </el-input>
        </el-form-item>
        <el-form-item prop="password_repeat">
          <el-input v-model="form.password_repeat" type="password" maxlength="20" placeholder="重复密码">
            <template #prefix>
              <el-icon><Lock /></el-icon>
            </template>
          </el-input>
        </el-form-item>
        <el-form-item prop="email">
          <el-input v-model="form.email"  type="email" placeholder="电子邮件地址">
            <template #prefix>
              <el-icon><Message /></el-icon>
            </template>
          </el-input>
        </el-form-item>
        <el-form-item prop="code">
          <el-row :gutter="10" style="width: 100%;">
            <el-col :span="17">
              <el-input v-model="form.code" maxlength="6" type="text" placeholder="请输入验证码">
                <template #prefix>
                  <el-icon><EditPen /></el-icon>
                </template>
              </el-input>
            </el-col>
            <el-col :span="5">
              <el-button type="success" :disabled="! determineIfEmailIsCorrect || codeTime" @click="askCode">
               {{codeTime > 0 ? `请稍后${codeTime}秒`:`获取验证码`}}
              </el-button>
            </el-col>
          </el-row>
        </el-form-item>
      </el-form>
    </div>
    <div style="margin-top: 80px">
      <el-button style="width: 270px" type="warning" plain @click="register">立即注册</el-button>
    </div>
    <div style="margin-top: 20px">
      <span style="font-size: 14px;line-height: 15px;color: grey">已有账号？</span>
      <el-link style="translate: 0 -1px" @click="router.push('/')">立即登录</el-link>
    </div>
  </div>
</div>
</template>

<style scoped>

</style>